Terminate mold stack after error
Terminate mold stack after error

The length of the mold stack was adjusted on errors, but it was not
then terminated with an END.

giuliolunati/ren-c,kealist/ren-c,codebybrett/ren-c,draegtun/ren-c,draegtun/ren-c,giuliolunati/ren-c,rgchris/ren-c,hostilefork/rebol,draegtun/ren-c,giuliolunati/ren-c,kealist/ren-c,rgchris/ren-c,codebybrett/ren-c,hostilefork/rebol,hostilefork/rebol,hostilefork/rebol,rgchris/ren-c,codebybrett/ren-c,giuliolunati/ren-c,codebybrett/ren-c,codebybrett/ren-c,draegtun/ren-c,rgchris/ren-c,hostilefork/rebol,codebybrett/ren-c,kealist/ren-c,kealist/ren-c,kealist/ren-c,draegtun/ren-c,kealist/ren-c,giuliolunati/ren-c,hostilefork/rebol,rgchris/ren-c,draegtun/ren-c